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Product description

TU-Berlin certified roofing underlay for pitched roofs

Alfa Rufol UDB-A 165 is the A-classified (ZVDH), driving rain proof, highly diffusion open roofing underlay (sub-membrane, sheathing membrane) for ventilated and non-ventilated pitched roofs. It is applied between the thermal insulation and main battens.
Suitable for the direct installation on top of the thermal insulation. Alfa Rufol UDB-A 165 prevents the penetration of humidity (e.g. due to driving snow) and penetration of dirt into the thermal insulation.